| PEOPLE | Chambersburg | Bel Air (Harford county) | United States |
| Population | 20,268 | 10,120 | 308,035,306 |
| Pop. Density | 2,927 | 3,450 | 87 |
| Pop. Change | 14.66% | 8.90% | 8.07% |
| Median Age | 37.2 | 40.4 | 37.3 |
| Households | 8,335 | 4,491 | 116,716,292 |
| Household Size | 2.33 | 2.31 | 2.58 |
| Male Population | 46.60% | 47.83% | 49.27% |
| Female Population | 53.40% | 52.17% | 50.96% |
| Married Population | 40.43% | 45.95% | 47.02% |
| Single Population | 59.57% | 54.05% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.44% | 5.59% | 6.56% |
| Age 5 to 9 | 6.59% | 5.28% | 6.61% |
| Age 10 to 14 | 5.71% | 6.10% | 6.71% |
| Age 15 to 17 | 3.56% | 3.58% | 4.21% |
| Age 18 to 20 | 2.60% | 2.16% | 2.95% |
| Age 21 to 24 | 6.71% | 6.69% | 7.01% |
| Age 25 to 34 | 14.76% | 14.39% | 13.33% |
| Age 35 to 44 | 11.67% | 11.70% | 13.33% |
| Age 45 to 49 | 11.91% | 14.09% | 14.61% |
| Age 50 to 54 | 11.91% | 14.09% | 14.61% |
| Age 55 to 59 | 11.09% | 12.06% | 11.84% |
| Age 60 to 64 | 11.09% | 12.06% | 11.84% |
| Age 65 to 74 | 7.03% | 7.91% | 7.05% |
| Age 75 to 84 | 6.78% | 7.06% | 4.24% |
| Age 85 and over | 4.16% | 3.41% | 1.78% |
| RACE | | | |
| White | 77.05% | 89.75% | 72.41% |
| Black | 9.16% | 4.43% | 12.61% |
| Asian | 1.39% | 1.80% | 4.75% |
| American Indian | 0.35% | 0.23% | 0.95% |
| Other | 12.06% | 3.79% | 9.28% |
| Hispanic | 20.58% | 0.64% | 16.35% |
| Non-Hispanic | 79.42% | 99.36% | 83.65% |
| FAMILY | | | |
| Married, w/children | 24.59% | 27.65% | 30.42% |
| Married, no children | 42.49% | 44.00% | 42.46% |
| Single, w/children | 21.00% | 15.73% | 14.39% |
| Single, no children | 11.92% | 12.62% | 12.73% |
| Divorced | 13.25% | 9.88% | 10.62% |
| Separated | 7.18% | 8.38% | 4.97% |
| Widowed | 11.57% | 8.49% | 6.14% |
| Now Married | 39.71% | 46.28% | 46.32% |
| Never Married | 28.29% | 26.97% | 31.95% |
